Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7439210 | Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations | Gary C. West, David Carbajal | 2008-10-21 |
| 4717488 | Spacer fluid | James M. Seheult | 1988-01-05 |